The charging interface is an accessory that is convenient for car owners to use the vehicle charging power supply to charge digital products anytime and anywhere. Some high-end electric car charger generally have two USB ports, which can charge two digital products at the same time. These products generally have overload protection, short-circuit protection, high-voltage input protection, high-temperature protection and four-fold safety protection functions to ensure safe use.
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Many people are worried about the safety of USB socket, a new electronic product. Actually, it's not like this. USB socket belongs to weak electronic products, and its output voltage is only about 5v. A good USB socket has the function of intelligent current distribution. The selected USB socket shall meet the following conditions:
1. Look at the price. The cost of a USB socket with intelligent current distribution is naturally indispensable. These price standards can refer to the price of big brand USB sockets. If it is too low, we should consider its safety performance. After all, safety comes first. Remember not to be greedy and lucky.
2. It is best to choose a USB socket with an indicator light, which can show whether the contact is good or not and whether the internal wiring is unobstructed, which plays a warning role in safety. (Myth: The indicator light will not automatically switch the usb socket. The indicator light only represents whether there is normal power supply when plugged in and whether the plug line is plugged in normally, and does not represent whether there is power supply when standby. The usb socket with inner core automatic on-off switch belongs to the patent of very few brands, and it is generally marked with automatic on-off switch next to it)
3. It is best to choose a USB socket with a button or automatic on/off, so that USB does not need to run for a long time and consumes electricity and heat (details are introduced in detail in the current market category)
4. When selecting the automatic on-off USB socket, select the automatic USB socket marked with automatic on-off or door switch.
Baidu encyclopedia -USB socket